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1. DELCOS 3100 Electronics
[Display] / Problem
Possible Cause
Remedy
22
[FAULT SENSOR R2]
Faulty compression temperature sensor
Pressure or temperature sensor faulty
Check, changing if necessary
Damaged cabling to sensor
Check, search for cause
[FAULT DIRECT ROT]
No pressure being built up in start-up phase,
e.g. because drive motor is turning in wrong
direction.
Connect correct phase sequence
[FAULT ROT.LINE]
Wrong direction of rotation of the drive motor
(see electrical circuit diagram)
Connect correct phase sequence
[FAULT MAINT PER]
Maintenance shutdown
(2)
activated and
100 hours still left in maintenance interval
(2)
Carry out maintenance and re-
program
[FAULT SOLENOID]
Short circuit or line break in relation to
solenoid valve Y1 or Y4
Check, replacing or changing if
necessary
[FAULT CONVERTER]
In version RS: failure of "converter ready"
converter signal during [SPEED
REGULATION ON/OFF] mode
Check converter (air filter, internal fan)
If applicable, switch over to [BYPASS
OPERATION] (option, see 1.7.2)
In version SR: communication failure
between DELCOS 3100 and SR drive
through CAN interface
Check
- SR system control voltages
- SR system fuses
- CAN interface wiring
- If no fault can be found, notify
Gardner Denver service engineer.
[FAULT HEAVY STARTUP]
Final compression pressure too high during
motor start-up phase.
Check whether intake regulator tightly
seals.
[WARNING SPEED-SIG.]
Line break or short circuit in relation to
setpoint signal to the converter.
Failure of "set point > 3.5 mA" converter
signal during [speed cont.ON/OFF] operating
mode.
MS bus module A02 failed.
Converter analogue input faulty.
[FAULT SPEED LOW]
Permissible minimum speed not reached.
Notify Gardner Denver Service
Engineer.
Faulty connection between emergency-OFF
and SR system.
Check connection of emergency-OFF
at gate drive board plus J19.
[FAULT COOLING]
Air-cooled systems:
Failure of system fan
Resistances too high through
delivery/discharge air channels
Check, install auxiliary fan in
necessary
Fan-motor circuit breaker incorrectly set
Set to 110% of rated fan flow
Fan motor faulty
Check, changing if necessary
Water-cooled systems:
Inadequate cooling water supply
Cooling-water temperature too high
Improve
Cooling-water flow too low
Increase
Dirt collector clogged
Clean
Cooling-water solenoid valve not opening
Check, changing if necessary
Air in the system
Bleed